EP2894650B1 - Switching device - Google Patents
Switching device Download PDFInfo
- Publication number
- EP2894650B1 EP2894650B1 EP14151025.5A EP14151025A EP2894650B1 EP 2894650 B1 EP2894650 B1 EP 2894650B1 EP 14151025 A EP14151025 A EP 14151025A EP 2894650 B1 EP2894650 B1 EP 2894650B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- key
- switching
- snap
- snap disc
- recovery device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000011084 recovery Methods 0.000 claims description 16
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000001131 transforming effect Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009420 retrofitting Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
- H01H15/02—Details
- H01H15/06—Movable parts; Contacts mounted thereon
- H01H15/10—Operating parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/04—Levers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
- H01H5/04—Energy stored by deformation of elastic members
- H01H5/30—Energy stored by deformation of elastic members by buckling of disc springs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
- H01H2003/463—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle using a blade spring lever for perpendicular force transmission
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2215/00—Tactile feedback
- H01H2215/034—Separate snap action
- H01H2215/036—Metallic disc
Definitions
- the invention relates to a switching device for converting a mechanical feed movement in an electrical switching signal according to the preamble of claim 1.
- Such a switching device can, for example, the EP 1884971 A1 or EP 2068334 A1 be removed.
- Such a switching device is for example the EP 1750291 B1 refer to.
- the incorporated in the housing of the switching device through hole is closed by means of a dome-like key made of a flexurally elastic material.
- the key extends completely or partially through the passage opening and can be moved axially relative to this.
- a snap disc made of a metallic bending elastic material is arranged, which is curved in the direction of the key.
- a switch panel consisting of two electrical contacts.
- this is delivered in the direction of the snap disk and thereby the snap disk is transferred from its initial position into a switching position, which is characterized in that the snap disc in the direction of the panel or the contacts is bulged.
- the snap-action disk made of an electrically conductive material connects the two contacts of the switching field, so that an electrical short circuit is produced.
- the mechanical Supply movement of the button is converted into an electrical switching signal, which can be used for example by an evaluation device which is connected to the electrical contacts, for controlling a power tool of an electrical appliance or the like.
- the stroke of the button and the snap-action disc can be adapted to different geometric conditions, without having to make extensive and costly retrofitting measures to the switching device and
- the switching feel of the switching device should be able to be adapted to the corresponding customer request, in which only the distance between the switching feel affecting components is changed.
- the existing return device is used to transfer the snap disk from the switching position back to its original position.
- the return device is drivingly connected to the button or the intermediate member, but also the switching time at which the return device in operative contact with the snap-action disc occurs in order to transfer these from the switching position to the starting position or into a middle position, from which the snap-action disc automatically snaps back into the starting position.
- both the stroke and the switching time at which the key or the intermediate member come into operative contact with the snap-action disc variably adjustable.
- FIGS. 1a . 1b and 1c a first embodiment of a switching device 1 is shown, which is used for example on electrically operated machine tools, equipment or the like to generate from a mechanical feed movement, an electrical switching signal by which the machine tool can be controlled.
- the switching device 1 consists of a housing 2, in which a through hole 3 is incorporated.
- a key 4 is used, which is held or mounted axially movable in the passage opening 3. Consequently, the key 4 can be moved relative to the housing 2 and perpendicular to the outer end face thereof; the direction of movement of the key 4 is indicated by the reference numeral 5.
- a snap-action disc 6 is arranged, which extends adjacent to and spaced from the underside of the key 4.
- the snap-action disc 6 is arched or bent in the direction of the underside of the button 4 and fixed in the housing 2 at the edge. This starting position of the snap disk 6 is marked with I.
- a switch panel 9 Spaced to the underside of the snap disk 6, a switch panel 9 is provided, which is formed from two or more electrical contacts 7 and 8.
- the two electrical contacts 7 and 8 extend in a common plane and equidistant from the snap disk 6.
- the snap disk 6 is positionally oriented or arched due to their geometric and structural design. This means that the snap disc 6 is fixed in the starting position I and in the switching position II with the predetermined curvature. With the help of the axial feed movement of the key 4, the snap-action disc 6 can be pressed out of the starting position I into a middle position.
- the button 4 acts centrally on the snap disk 6. As soon as the snap-action disc 6 has reached this middle position, the snap-action disc 6 snaps into the switching position II, without the need for push-in forces to be transmitted by the key 4 for this purpose. A complete push of the button 4 in the direction of the switching position II of the snap disk 6 is thus not necessary.
- a return device 12 is attached or the key 4 and the return device 12 form a common component, whereby the snap disk 6 is encompassed on both sides by the key 4 and the return device 12;
- the snap disk is thus between the key 4 and the retractor 12.
- the distance between the underside of the button 4 and the top of the snap 6 and the distance between the bottom of the snap 6 and the retractor 12 can be sized almost any size, because it is only necessary, the snap disk 6 from the starting position I or to push the shift position II into a middle position.
- the subsequent movement of the snap-action disc 6 takes place independently due to the bending lock which is stored in the snap-action disc 6.
- FIGS. 2a . 2 B and 2c is a second embodiment of a switching device 1 'refer.
- the key 4 is attached to the outside of the housing 2 and the direction of movement 5 of the key 4 is parallel to the end face of the housing 2.
- an intermediate member 11 is provided in the passage opening 3, which is drivingly connected to the key 4.
- a seal 24 is attached between the housing 2 and intermediate member.
- the intermediate member 11 is pivotally supported on the housing 2 on a bearing 20 in the manner of a rocker, so that upon actuation of the button 4, the intermediate member 11 is pressed on the one adjacent to the button 4 extending side down and on the opposite side of Bearing 20 is transferred upwards.
- the intermediate member 11 is configured as a lever 14 which has a web 15 and a U-profile 16. The web 15 is inserted into the passage opening 3 and connected to the key 4 drivingly.
- the snap-action disc 6 extends between the U-profile 16.
- the U-profile 16 consists of a first and a second leg 18 and 19, between which the snap disc 6 is arranged.
- the first leg 18 is formed at its free end as a plunger 17 which rests on one of the outside of the snap disk 6 and cooperates with this.
- the plunger 17 may for example have different lengths, so that the distance between the free end of the plunger 17 and the snap disk 6 is adjustable.
- the bearing 20, on which the intermediate member 11 is held pivotably on the housing 2, is shown schematically on the first leg 18. Accordingly, both the second leg 19 and the entire intermediate member 11 are pivoted about the bearing 20 so that upon actuation of the key 4 in the direction of the force F the intermediate member 11 on the left side of the bearing 20 is pressed down and on the right side of the bearing 20 upwards.
- the hammer 17 thus comes into operative contact with the snap-action disc 6 and pushes it into the middle position. As soon as this center position is reached, the snap-action disc 6 snaps through and produces an electrical connection with the electrical contact 21.
- the return device 12 is formed in this embodiment by the leg 19 as part of the intermediate member 11.
- Figure 2c presses the leg 19, the snap-action disc 6 from the shift position II in a middle position as soon as the operating force F no longer acts on the intermediate member 11 and by a retraction of the button 4, the intermediate member 11 is transferred to the initial position I.
- the leg 18, on which the plunger 17 is attached acts as a delivery device on the snap-action disk as soon as the key 4 is moved counter to the biasing force applied by the helical compression spring 13.
- the helical compression spring 13 is namely compressed by the feed force 11, whereby the biasing force arises.
- FIG. 3 shows the switching device 1 'in the center position of the snap disk before snapping and
- FIG. 4 shows the switching device in snapped state with the corresponding force-displacement diagrams.
- the in the FIGS. 5a and 5b be taken to be taken constructive measures.
- the force-displacement behavior can be selectively changed by, for example, the length 22 of the return device 12, as in FIG. 5b shown, shortened.
- the switching feel is adjustable in that the two legs of the U-profile 16 can be formed in different lengths, or the hammer or plunger 17 may have a different length 23.
- the plunger 17 or the return device 12 can be positioned by different lengths 25, 26 of the legs 18 or 19 also eccentrically with respect to the central axis of the snap disk, which can also change the switching feel.
- the switching feel is adjustable by the use of various rigid materials for the seal 24.
- FIG. 5c represents yet another the effect of shortening the length 22 of the retractor 12 in the force-displacement diagram with respect to the hysteresis is comparative.
- the key 4 is designed in the form of a lever, which is configured as an integral component with the intermediate member 11 and the return device 12
- FIGS. 2a to 5c provided helical compression spring 13 is replaced by a leaf spring 13 ', which is arranged in the region of the bearing 20 and connected to the housing 2 and the key 4.
- the leaf spring 13 ' Upon actuation of the button 4, therefore, the leaf spring 13 'is set under bias, whereby the button 4, the intermediate member 11 and the retractor 12 are returned to their original positions I as soon as the operating force on the button 4 no longer acts.
Landscapes
- Push-Button Switches (AREA)
Description
Die Erfindung bezieht sich auf eine Schaltvorrichtung zur Umwandlung einer mechanischen Zustellbewegung in ein elektrisches Schaltsignal nach dem Oberbegriff des Patentanspruches 1.The invention relates to a switching device for converting a mechanical feed movement in an electrical switching signal according to the preamble of
Eine solche Schaltvorrichtung kann beispielsweise der
Eine solche Schaltvorrichtung ist beispielsweise der
Im Inneren des Gehäuses ist eine Schnappscheibe aus einem metallischen biegeelastischen Werkstoff angeordnet, die in Richtung der Taste gewölbt ist. Unterhalb der Schnappscheibe bezogen auf die Bewegungsrichtung der Taste ist ein Schaltfeld, bestehend aus zwei elektrischen Kontakten, vorgesehen. Bei der Betätigung der Taste wird diese in Richtung der Schnappscheibe zugestellt und dabei wird die Schnappscheibe aus ihrer Ausgangslage in eine Schaltposition überführt, die dadurch gekennzeichnet ist, dass die Schnappscheibe in Richtung des Schaltfeldes bzw. der Kontakte ausgewölbt ist. Durch diese Schaltposition verbindet die aus einem elektrisch leitfähigen Material hergestellte Schnappscheibe die beiden Kontakte des Schaltfeldes, so dass ein elektrischer Kurzschluss entsteht. Somit ist die mechanische Zustellbewegung der Taste in ein elektrisches Schaltsignal umgewandelt, das beispielsweise von einer Auswerteeinrichtung, die mit den elektrischen Kontakten verbunden ist, zur Steuerung einer Werkezugmaschine eines elektrischen Gerätes oder dgl. benutzt werden kann.Inside the housing a snap disc made of a metallic bending elastic material is arranged, which is curved in the direction of the key. Below the snap disk relative to the direction of movement of the button, a switch panel, consisting of two electrical contacts, is provided. Upon actuation of the button this is delivered in the direction of the snap disk and thereby the snap disk is transferred from its initial position into a switching position, which is characterized in that the snap disc in the direction of the panel or the contacts is bulged. Through this switching position, the snap-action disk made of an electrically conductive material connects the two contacts of the switching field, so that an electrical short circuit is produced. Thus, the mechanical Supply movement of the button is converted into an electrical switching signal, which can be used for example by an evaluation device which is connected to the electrical contacts, for controlling a power tool of an electrical appliance or the like.
Sobald die Betätigungskraft auf die Taste nicht mehr einwirkt, drückt die Schnappscheibe aufgrund ihrer Eigenelastizität und der der Schnappscheibe zugrundeliegenden Geometrie die Taste zurück in die Ausgangslage. Üblicherweise liegt die Unterseite der Taste auf der Oberseite der Schnappscheibe in deren Ausgangslage zentrisch auf und wird von der Schnappscheibe demnach lageorientiert an dem Gehäuse gehalten bzw. abgestützt.As soon as the actuating force no longer acts on the button, pressing the button back to the starting position due to its inherent elasticity and the geometry underlying the snap disc. Usually, the underside of the button on the top of the snap-action disc in its initial position is centered and is therefore held or supported by the snap-action disc in a position-oriented manner on the housing.
Solche Schaltvorrichtungen haben sich in der Praxis zwar bewährt, es hat sich jedoch nachteiligerweise herausgestellt, dass die Schalthaptik solcher Schaltvorrichtungen nahezu nicht einstellbar sind, da der Schalt- oder Hubweg, also der Hub, den die Taste und die Schnappscheibe zur Erzeugung des Schaltkontaktes der Taste zurücklegt, aufgrund den vorliegenden geometrischen Verhältnissen vorgegeben ist. Auch die Biegeelastizität der Schnappscheibe beeinflusst die Schalthaptik, so dass bei einer angepassten Anordnung der Taste und der Schnappscheibe über einem Schaltfeld nahezu keinerlei konstruktive Möglichkeiten bestehen, die Schalthaptik zu verändern. Die Ausgestaltung bzw. die Auswölbung der Schnappscheibe ist nämlich aufgrund dieser geometrischen Verhältnisse wenig oder überhaupt nicht beeinflussbar. Auch der Hubweg der Taste und der Schnappscheibe ist nahezu unverändert vorgegeben, so dass unterschiedlich lang bemessene Schaltwege von solchen Schaltvorrichtungen nicht überbrückbar sind.Although such switching devices have proven themselves in practice, it has disadvantageously been found that the switching feel of such switching devices are almost not adjustable, since the switching or stroke, so the hub, the button and the snap-action disc for generating the switching contact of the button is given due to the existing geometric conditions. The flexural elasticity of the snap-action disc influences the switching feel, so that with an adapted arrangement of the button and the snap-action disc over a control panel, there are virtually no design possibilities for changing the switching feel. The design or the bulge of the snap-action disc is due to these geometric conditions little or not influenced. The stroke of the button and the snap disc is set almost unchanged, so that different lengths measured switching paths of such switching devices are not bridged.
Es ist daher Aufgabe der Erfindung, eine Schaltvorrichtung der eingangs genannten Gattung zur Verfügung zu stellen, durch die zum einen der Hubweg der Taste und der Schnappscheibe an unterschiedliche geometrische Verhältnisse angepasst werden kann, ohne dass dafür umfangreiche und kostenintensive Umrüstungsmaßnahmen an der Schaltvorrichtung vorzunehmen sind und zum anderen soll die Schalthaptik der Schaltvorrichtung an den entsprechenden Kundenwunsch angepasst werden können, in dem lediglich der Abstand zwischen den die Schalthaptik beeinflussenden Bauteilen verändert ist.It is therefore an object of the invention to provide a switching device of the type mentioned, by the one hand, the stroke of the button and the snap-action disc can be adapted to different geometric conditions, without having to make extensive and costly retrofitting measures to the switching device and On the other hand, the switching feel of the switching device should be able to be adapted to the corresponding customer request, in which only the distance between the switching feel affecting components is changed.
Diese Aufgaben sind erfindungsgemäß durch die Merkmale des kennzeichnenden Teils von Patentanspruch 1 gelöst.These objects are achieved by the features of the characterizing part of
Weitere vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous developments of the invention will become apparent from the dependent claims.
Dadurch, dass die Schnappscheibe in der Ausgangslage und in der Schaltposition lageorientiert ausgelenkt ist, dass die Schnappscheibe mit einer Rückholeinrichtung trieblich verbunden ist und dass die Rückholeinrichtung mit der Taste oder dem Zwischenglied verbunden ist, und bei dessen Rückstellung die Schnappscheibe in die Ausgangslage drückt, ist gewährleistet, dass sowohl der zurück zu legende Hubweg der Taste an beliebige geometrische Einbauverhältnisse angepasst werden kann, ohne dass hierfür konstruktive Umrüstungsmaßnahmen an der Schaltvorrichtung notwendig sind und zum anderen kann die Schalthaptik derart eingestellt sein, dass diese dem jeweiligen Kundenwunsch entspricht.Characterized in that the snap disc is deflected position-oriented in the starting position and in the switching position, that the snap disc is drivingly connected to a retractor and that the retractor is connected to the button or the intermediate member, and in its recovery presses the snap disc in the starting position is ensures that both the return stroke of the button to be adjusted to any geometric installation conditions, without requiring constructive retrofitting measures to the switching device are necessary and on the other hand, the switching feel can be adjusted so that it corresponds to the customer's request.
Aufgrund der geometrischen Ausgestaltungsmöglichkeiten zwischen der Taste und der Schnappscheibe bzw. dem Zwischenglied und der Schnappscheibe kann vorteilhafterweise nahezu ein beliebig langer oder kurzer Schalt- bzw. Hubweg überbrückt sein, denn sowohl die Taste als auch das Zwischenglied sind unabhängig von der Schnappscheibe beweglich gelagert und die Schnappscheibe weist in ihrer Ausgangslage und in ihrer Schaltposition eine Lageorientierung auf, die durch die geometrische Ausgestaltung der Schnappscheibe und der verwendeten Materialien erreicht ist. Durch die lageorientierte Auswölbung der Schnappscheibe in der Ausgangslage und in der Schaltposition wird diese demnach unabhängig von dem zurückzulegenden Schaltweg betätigt. Es ist lediglich erforderlich, die Schnappscheibe in die Mittelstellung zu drücken, so dass diese anschließend in die jeweils gegenüberliegende Position schnappt.Due to the geometric design possibilities between the button and the snap-action disc or the intermediate member and the snap disc can be almost bridged almost any length or short shift or stroke, because both the button and the intermediate member are mounted independently of the snap-action and the movable Snap disk has in its initial position and in its switching position on a position orientation, which is achieved by the geometric design of the snap disk and the materials used. Due to the position-oriented bulge of the snap-action disc in the starting position and in the switching position, this is accordingly actuated independently of the switching path to be covered. It is only necessary to press the snap disc in the center position, so that it then snaps into the respective opposite position.
Die vorhandene Rückholeinrichtung dient dazu, die Schnappscheibe aus der Schaltposition in ihre Ausgangslage zurück zu überführen. Dabei ist die Rückholeinrichtung zwar trieblich mit der Taste oder dem Zwischenglied verbunden, jedoch kann auch der Schaltzeitpunkt, an dem die Rückholeinrichtung mit der Schnappscheibe in Wirkkontakt tritt, um diese aus der Schaltposition in die Ausgangslage bzw. in eine Mittelage, aus der die Schnappscheibe selbstständig in die Ausgangslage zurückschnappt, zu überführen, eingestellt werden.The existing return device is used to transfer the snap disk from the switching position back to its original position. Although the return device is drivingly connected to the button or the intermediate member, but also the switching time at which the return device in operative contact with the snap-action disc occurs in order to transfer these from the switching position to the starting position or into a middle position, from which the snap-action disc automatically snaps back into the starting position.
Folglich ist vorteilhafterweise sowohl der Hubweg als auch der Schaltzeitpunkt, bei dem die Taste bzw. das Zwischenglied in Wirkkontakt mit der Schnappscheibe gelangen, variabel einstellbar.Consequently, advantageously, both the stroke and the switching time at which the key or the intermediate member come into operative contact with the snap-action disc, variably adjustable.
In der Zeichnung sind drei erfindungsgemäße Ausführungsbeispiele der Schaltvorrichtung nachfolgend näher erläutert. Im Einzelnen zeigt:
- Figur 1a
- ein erstes Ausführungsbeispiel einer Schaltvorrichtung, bestehend aus einem Gehäuse in dem eine Durchgangsöffnung eingearbeitet ist und aus einer in der Durchgangsöffnung eingesetzten und axial beweglich gelagerten Taste, aus einer mit der Unterseite der Taste zusammenwirkenden Schnappscheibe und aus einem in Bewegungsrichtung der Taste angeordneten Schaltfeld, sowie aus einer Rückholeinrichtung, die trieblich mit der Schnappscheibe verbunden ist, in Draufsicht,
- Figur 1b
- die Schaltvorrichtung gemäß
Figur 1a , in vergrößerter Darstellung und in der Ausgangslage der Schnappscheibe, - Figur 1c
- die Schaltvorrichtung gemäß
Figur 1a , in vergrößerter Darstellung und in der Schaltposition, - Figur 2a
- ein zweites Ausführungsbeispiel einer Schaltvorrichtung, bestehend aus einem Gehäuse in dem eine Durchgangsöffnung eingearbeitet ist, aus einer in der Durchgangsöffnung eingesetzten und in dieser axial beweglich gelagerten Zwischenglied, das mit einer zu dem Gehäuse außenseitig angebrachten Taste verbunden ist, aus einer mit dem Zwischenglied zusammenwirkenden Schnappscheibe und aus einem Schaltfeld sowie aus einer Rückholeinrichtung, die trieblich mit der Schnappscheibe und dem Zwischenglied verbunden ist, in Draufsicht, sowie einem Kraft-Weg-Diagramm der Schnappscheibe,
- Figur 2b
- die Schaltvorrichtung gemäß
Figur 2a in der Ausgangslage und die triebliche Wirkverbindung zwischen der Taste, dem Zwischenglied und der Schnappscheibe, in vergrößerter Darstellung, - Figur 2c
- die Schaltvorrichtung gemäß
Figur 2b in der Schaltposition, Figur 3- die Schaltvorrichtung gemäß
Figur 2a kurz vor dem Durchschnappen der Schnappscheibe in die Schaltposition, Figur 4- die Schaltvorrichtung gemäß
Figur 2a nach dem Durchschnappen der Schnappscheibe in die Schaltposition, - Figur 5a
- die Taste der Schaltvorrichtung gemäß
mit einer andersartig ausgestalteten Rückholeinrichtung in einer längeren Ausführungsvariante,Figur 3 - Figur 5b
- die Taste der Schaltvorrichtung gemäß
Figur 5a mit einer kürzeren Ausführungsvariante der Rückholeinrichtung zur Veränderung der Hysterese, - Figur 5c
- die Gegenüberstellung der Schaltvorrichtungen gemäß den
Figuren 5a und 5b mit der jeweiligen Hysterese in Form eines KraftWege-Diagramms, - Figur 6a
- eine dritte Ausführungsvariante einer Schaltvorrichtung, bestehend aus einem Gehäuse, in dem eine Durchgangsöffnung eingearbeitet ist und aus einem in der Durchgangsöffnung eingesetzten Zwischenglied und aus einem an dieser befestigten Taste, die entlang der Stirnseite des Gehäuses axial beweglich gelagert ist, aus einer mit der Taste und dem Zwischenglied zusammenwirkenden Schnappscheibe, aus einer im Bereich der Schnappscheibe angeordneten Rückholeinrichtung, die in einem Lager verschwenkbar gehalten ist und aus einer mit einer der Rückholeinrichtung zusammenwirkenden Blattfeder sowie deren Hysterese, in einer und Ausgangslage
- Figur 6b
- die Schaltvorrichtung gemäß
Figur 6a in einer Schaltposition.
- FIG. 1a
- a first embodiment of a switching device consisting of a housing in which a through hole is incorporated and from a inserted in the through hole and axially movably mounted key, from a cooperating with the underside of the button snap disk and arranged in the direction of movement of the button panel, and from a return device, which is drivingly connected to the snap disc, in plan view,
- FIG. 1b
- the switching device according to
FIG. 1a , in an enlarged view and in the starting position of the snap disc, - Figure 1c
- the switching device according to
FIG. 1a in an enlarged view and in the switching position, - FIG. 2a
- a second embodiment of a switching device consisting of a housing in which a through hole is incorporated, from a inserted in the through hole and axially movably mounted in this intermediate member which is connected to a outside of the housing attached to the button, from a cooperating with the intermediate member snap disc and from a cubicle as well as from a return device, which drives with the snap disk and connected to the intermediate member, in plan view, and a force-displacement diagram of the snap disk,
- FIG. 2b
- the switching device according to
FIG. 2a in the starting position and the operative connection between the key, the intermediate member and the snap-action disc, in an enlarged view, - Figure 2c
- the switching device according to
FIG. 2b in the switching position, - FIG. 3
- the switching device according to
FIG. 2a just before snapping the snap-action disc into the switching position, - FIG. 4
- the switching device according to
FIG. 2a after snapping the snap-action disc into the switching position, - FIG. 5a
- the button of the switching device according to
FIG. 3 with a differently configured return device in a longer embodiment, - FIG. 5b
- the button of the switching device according to
FIG. 5a with a shorter embodiment of the return device for changing the hysteresis, - FIG. 5c
- the comparison of the switching devices according to the
FIGS. 5a and 5b with the respective hysteresis in the form of a force-displacement diagram, - FIG. 6a
- a third embodiment of a switching device consisting of a housing in which a through hole is incorporated and from an inserted in the through hole intermediate member and a button attached to this, which is axially movably mounted along the front side of the housing, one with the button and the pusher cooperating snap disk, one in the region of Snap disk arranged return device, which is pivotally supported in a bearing and from a cooperating with one of the retracting leaf spring and its hysteresis, in one and initial position
- FIG. 6b
- the switching device according to
FIG. 6a in a switching position.
In den
Im Inneren des Gehäuses 2 ist eine Schnappscheibe 6 angeordnet, die benachbart und beabstandet zu der Unterseite der Taste 4 verläuft. Die Schnappscheibe 6 ist in Richtung der Unterseite der Taste 4 gewölbt oder gebogen und randseitig im Gehäuse 2 befestigt. Diese Ausgangslage der Schnappscheibe 6 ist mit I gekennzeichnet.Inside the
Beabstandet zu der Unterseite der Schnappscheibe 6 ist ein Schaltfeld 9 vorgesehen, das aus zwei oder auch mehreren elektrischen Kontakten 7 und 8 gebildet ist. Die beiden elektrischen Kontakte 7 und 8 verlaufen in einer gemeinsamen Ebene und sind gleichweit von der Schnappscheibe 6 beabstandet. Sobald die Schnappscheibe 6 aus der Ausgangslage I in eine Schaltposition, die als II gekennzeichnet ist, gemäß
Sowohl in der Ausgangslage I gemäß
An der Taste 4 ist eine Rückholeinrichtung 12 befestigt oder die Taste 4 und die Rückholeinrichtung 12 bilden ein gemeinsames Bauteil, wodurch die Schnappscheibe 6 beidseitig von der Taste 4 und der Rückholeinrichtung 12 umgriffen ist; die Schnappscheibe liegt also zwischen der Taste 4 und der Rückholeinrichtung 12. Durch eine Schraubendruckfeder 13, die an dem Gehäuse 2 und der Taste 4 befestigt ist, wird die Taste 4 aus der Schaltposition II in die Ausgangslage I zurückgeführt, so dass bei der Rückholbewegung der Taste 4 die Rückholeinrichtung 12 mit der Schnappscheibe 6 in Wirkkontakt gelangt, so dass die Schnappscheibe 6 aus der Schaltposition II in die Ausgangslage I überführt ist.On the
Folglich kann der Abstand zwischen der Unterseite der Taste 4 und der Oberseite der Schnappscheibe 6 sowie der Abstand zwischen der Unterseite der Schnappscheibe 6 und der Rückholeinrichtung 12 nahezu beliebig groß bemessen werden, denn es ist lediglich erforderlich, die Schnappscheibe 6 aus der Ausgangslage I bzw. der Schaltposition II in eine Mittelstellung zu drücken. Die anschließende Bewegung der Schnappscheibe 6 erfolgt eigenständig aufgrund der Biegesperrung, die in der Schnappscheibe 6 gespeichert ist.Consequently, the distance between the underside of the
In den
Das U-Profil 16 besteht aus einem ersten und einem zweiten Schenkel 18 bzw. 19, zwischen denen die Schnappscheibe 6 angeordnet ist. Der erste Schenkel 18 ist an seinem freien Ende als Stößel 17 ausgeformt, der auf einer der Außenseite der Schnappscheibe 6 aufliegt bzw. mit dieser zusammenwirkt. Der Stößel 17 kann beispielsweise unterschiedliche Längen aufweisen, so dass der Abstand zwischen dem freien Ende des Stößels 17 und der Schnappscheibe 6 einstellbar ist. Das Lager 20, an dem das Zwischenglied 11 an dem Gehäuse 2 verschwenkbar gehalten ist, ist schematisch an dem ersten Schenkel 18 dargestellt. Um das Lager 20 wird demnach sowohl der zweite Schenkel 19 als auch das gesamte Zwischenglied 11 verschwenkt, so dass beim Betätigen der Taste 4 in Richtung der Kraft F das Zwischenglied 11 auf der linken Seite des Lagers 20 nach unten gedrückt ist und auf der rechten Seite des Lagers 20 nach oben. Der Hammer 17 gelangt somit in Wirkkontakt mit der Schnappscheibe 6 und drückt diese in die Mittelstellung. Sobald diese Mittelstellung erreicht ist, schnappt die Schnappscheibe 6 durch und erzeugt eine elektrische Verbindung mit dem elektrischen Kontakt 21.The U-profile 16 consists of a first and a
Gemäß
Die Rückholeinrichtung 12 ist in diesem Ausführungsbeispiel durch den Schenkel 19 als Teil des Zwischengliedes 11 gebildet. Gemäß
Um die Schalthaptik, im speziellen den ,Abstand im Kraft-Weg-Diagramm zwischen dem Schließen und dem Öffnen des Schaltkontaktes, also die Hysterese, gezielt einzustellen, können die in den
Weiterhin ist durch die Verwendung von verschiedenartig biegesteifen Materialien für die Dichtung 24 die Schalthaptik einstellbar.Furthermore, the switching feel is adjustable by the use of various rigid materials for the
In den
Allen drei Ausführungsvarianten der
Claims (8)
- A switching device (1, 1', 1") for transforming a mechanical advance movement into an electrical switching signal, consisting of,- a housing (2) in which a passage opening (3) is worked.- a key (4) arranged in the passage opening (3) of the housing (2) or by an intermediate element (11) arranged in the passage opening (3), mounted in an axially movable arrangement along the outside of the housing (2) and- a snap disc (8) arranged in the housing (2) which runs directly in the area of a switch field (9) formed by two contacts (7, 8), and which can be transferred from an initial position (I) to a switching position (II) by means of the key (4) or the intermediate element (11),in which the snap disc (6) is articulated in a positionally orientated manner in the initial position (I) and in the switching position (II), with a recovery device (12) interacting with the snap disc (6) and connected to the key (4), in which case the recovery device (12) is connected to the key (4) or the intermediate element (11) and when the recovery movement takes place the snap disc (6) is pressed into the initial position (I), in which
the intermediate element (11) is configured as a lever (14) mounted in a slightly pivoting arrangement in the housing (2) according to the principle of a rocker and in which the recovery device (12) is connected to the lever (14) or in which the lever (14) and the recovery device (12) form a common component,
characterised in that
a distance can be set between the snap disc (6) and the recovery device (12) in order to change the feel of the switching operation. - The switching device (1, 1', 1") in accordance with Claim 1,
characterised in that
the recovery device (12) interacts with a coil compression spring (13), that the coil compression spring (13) is supported on the housing (2) in the inside or on the outside and that the snap disc (6) is arranged between the key (4) and the recovery device (12). - The switching device (1, 1', 1") in accordance with Claim 1,
characterised in that
the lever (14) is formed from a web (15) and from a U-section (16) formed on the web (15), that the web (15) of the lever is guided through the passage opening (3) and is in a driving connection with the key and that the snap disc (6) is arranged between the U-section (16) of the lever (14), at least in a partial area. - The switching device (1, 1', 1") in accordance with Claim 3,
characterised in that
a leg (18,19) of the U-section (16) of the lever (14) is configured as a kind of tappet (17) which acts on the snap disc (6) when the latter is in the initial position (I) when the key (4) is actuated, and that the distance between the snap disc (6) and the head of the U-section (16) or tappet can be adjusted. - The switching device (1, 1', 1") in accordance with Claim 3 or 4,
characterised in that
the length of the lever (14), preferably the leg (18) of the U-section (16), running parallel to the snap disc (6) can be adjusted and that the U-section (16) of the lever (14) that runs adjacent to the snap disc (6) in the switching position (II) acts as the recovery device (12) on the snap disc (6) during the recovery of the key (4). - The switching device (1, 1', 1") in accordance with one of the aforementioned claims,
characterised in that
the recovery device (12) and/or the key (4) or the intermediate element (11) act centrally or eccentrically on the snap disc (6). - The switching device (1, 1', 1") in accordance with one of the aforementioned claims,
characterised in that
a bearing (20) is provided on the intermediate element (11) or the recovery device (12), in such a way that the key (4), the intermediate element (11) and the recovery device (12) can pivot about the bearing (20) according to the principle of a rocker and that the intermediate element (11) or the recovery device (12) act on the snap disc (4) depending on the movement direction of the rocker. - The switching device (1, 1', 1") in accordance with Claim 7,
characterised in that
a leaf spring (13') is attached to the bearing (20) by means of which the key (4), the intermediate element (11) and the recovery device (12) are pressed back to the initial position I following termination of the actuation force (F).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14151025.5A EP2894650B1 (en) | 2014-01-14 | 2014-01-14 | Switching device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14151025.5A EP2894650B1 (en) | 2014-01-14 | 2014-01-14 | Switching device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2894650A1 EP2894650A1 (en) | 2015-07-15 |
EP2894650B1 true EP2894650B1 (en) | 2017-09-27 |
Family
ID=49943218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14151025.5A Active EP2894650B1 (en) | 2014-01-14 | 2014-01-14 | Switching device |
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EP (1) | EP2894650B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106449255A (en) * | 2016-11-16 | 2017-02-22 | 大明电子有限公司 | Automobile steering wheel switch structure |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2434186A (en) * | 1943-04-22 | 1948-01-06 | Metals & Controls Corp | Combined electromagnetic and thermal protective circuit breaker system |
US2561405A (en) * | 1947-10-03 | 1951-07-24 | Pierce John B Foundation | Resilient motivating device |
JP2005302462A (en) * | 2004-04-09 | 2005-10-27 | Matsushita Electric Ind Co Ltd | Multidirectional operation switch |
DE102005037613A1 (en) | 2005-08-05 | 2007-02-08 | Rafi Gmbh & Co. Kg | microswitch |
TWI405229B (en) * | 2006-08-01 | 2013-08-11 | Hosiden Corp | Push push switch |
FR2924858B1 (en) * | 2007-12-06 | 2011-04-01 | Coactive Technologies Inc | ELECTRICAL SWITCH WITH SIDE ACTUATION AND ASSEMBLY COMPRISING SUCH A SWITCH |
-
2014
- 2014-01-14 EP EP14151025.5A patent/EP2894650B1/en active Active
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